If you're tired of only getting catalogs and bills in your mailbox, ask your friends to mail their tweets. For a month, Giles Turnbull corresponded with 15 of his Twitter followers by mail. "Tweeting by post made me appreciate the online and the offline. Brevity is a good thing, but there’s no reason we should only be brief on Twitter," Turnbull writes for The Morning News. Pair with: Our roundup of literary Twitter's first tweets.